Add templates

[pacarole]

Definitely needs style work but everything is functional! You can upload templates new templates and delete existing ones. The current password for the admin section is 'admin' and 'admin'. We should probably change that and put it in an environment variable. closes #85 and #86

[antislice]

Getting errors on posting-pro-staging-pr-93 when I try to upload/delete templates. The requests succeed - I can see the results when I refresh the page, but they return a 503 error and so it looks like nothing happens after I click the buttons.

Error from heroku logs:

2016-07-29T17:25:28.344423+00:00 app[web.1]: 69.12.169.82 - - [29/Jul/2016:17:25:28 +0000] "POST /api/templates/5/delete HTTP/1.1" 1 - 0.0032
2016-07-29T17:25:28.417700+00:00 heroku[router]: http_error="Invalid HTTP status line" at=error code=H17 desc="Poorly formatted HTTP response" method=POST path="/api/templates/5/delete" host=posting-pro-staging-pr-93.herokuapp.com request_id=7b144ae2-ed0b-45a8-9d11-c1061b3006d5 fwd="69.12.169.82" dyno=web.1 connect=2ms service=7ms status=503 bytes=239

[antislice]

Tested it locally, and actually the "nothing happens when I click the button" is there, too. But at least no 503 error.

• [x] Investigate/reproduce 503 error
• [x] Update UI in response to successful upload or deletion (whether it's update the list, show a "upload successful!" message, whatever)
• [x] The "Delete" button doesn't look clickable, make it look like a link or button

[antislice]

*cache

[antislice]

👍 :ship: because it works, but I'd still like an answer to the halt question